Flush-tank valve.



F. J. BOWLINGl FLUSH TANK VALVE,

APPLICATION FILED IuIIE 6. I9III.

Patented Apr. 8,1919.

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FRANCIS J. no'wnma,` or NEWv YORK, N.' Y.

,rtUsH-TANKVALVE. j

To all Iwhom it may concern.'

Be it known thatI, `FRANCIS J. DowLIkNe,

a citizen of theUnited States,'and alresident j of the city of New York, borough of Manhattan, in the county and State of New York, have invented a new and Improved Flush-Tank Valve, of which the following is A a full, clear, and exact description.;`

This yinvention relates Ito detailsy ofy plumbers fittings, and has particular reference t valves for flush. tanks with a view to nia-kingsuch valves non-leakable.A While I show 'i my improvement as :applied to the bottomfof l in, stilly for the purpose of illustrating a pracf tical embodiment thereof reference is had to' the accompanying drawings, in which like a ushtank tted with a delivery siphon, I f

wish it to be understood that certain features of my improvement are adapted to be used in conection with tubs, wash basins, sinks,- or other-receptacles, and hence Ido not desire to be limited in the interpretationfcf the4 claims except as may be required by the state of the art. Among the specific objects that I have in view is to provide an improved valve structure comprising what maybe calleda wedge both sides or surfaces of the wedge seat;

Another object of the inventiongis to prol vide improved facilities for insuring ythe prompt and automaticseating -or. closinggof v thermoretheg body of thespud is provided A still further object is to provide an immeans either,r

the valve.

proved delivery pipe coupling' with the spud or the lock nut t at secures the Spud, providing for the direct delivery` of all ment and combinationI of parts hereinafter described and claimed," and while the invention is not restricted to the exact details of construction disclosed or suggested `herereference characters designate the sameparts in the several views, and in which--k IFigure 1 is a vertical centralvsectional f View on line 1-1 of Fig. 2, and represent- Specication'of Letters Patent.

ing certain vfeatures -ofmy improvement asl sociated with` Hush tankfsiphons.

0f l. u Fig. 3 isla vertical sectional detail showing a modification in which the spud and delivery pipe funnel connection are indicated.

`Fig. 4 is a detail view of another modification in which the Spud is made in two -parts, the valve seat being integral with one part-fand the ffunnel being integral with the other part; and. Y j v Fg.` 5 isa further ymodification in which the valve seat is integral with .the spud and.

the combined lockin ,nutand funnel struc- Iatented'Apr. 8, 1919.

f Application filedv June 6, 1918. v Serial No.1238,572.

ture of a formi similar to` that of Fig. l

which cooperatesdirectly with the Spud.

lReferring now? vmore particularly to the drawings,l Ish'ow inthe first ligure a por` tion lof the bottom 10 of the flush tank or' analogous receptacle. 1 1 is a spudprojectf ing throughfthe bottom 10 and `having at its upper end or edge integral features as folj v lows: Aninw'ardly projecting flange 12, Van

outwardly projecting flange 13, shown` inl e Fig. l as lyingvin t Isame plane A'substantially as Vthe nge` 12,'and an upstandingA flange or rim 14 of about the same diameters,

as the main portion ofV the spudf. 'lhisrim 14 is preferably screw threaded ononefsur-A.

face, as for eXamplet-heouter surface. Furat or adjacent to yits lower end withy a screw thread, this being indicated aspreferably on the outer surface for thevaccommodation ofL the lock nut 15 whereby Vthe spud-isclamped tothe bottom 10, a gasket 16 of'rubber, or its equivalent, being interposed'between-the upper surface of the bottom and the outwardly l projecting? Hangs-13; f In Figs. 1 and 5 the lock nut 15 includes an integral tail piece or funnel structure =17 1 having. van externally threaded portionylS constitutin a shoulder against whichthe upper" flange end of the delivery pipe19 is a apted to be fitted and lockedfby means of a coupling knutQO. The Y tail piece or funnel '1T/projects welldownward into the ,end of the pipeand so overlaps thejoint between thek pipe'V and `the cou-j. pling nut. Hence with the upper end ofthe spud,I sealed'ybymeans of the washerf 16 against .leakagleno water canqpass. between the outer 'wall :of the Spud and the bottom 10 to the joint between the lock nut 15 and the lower end of the spud, nor between the lock nut and thebottom surface of the member 10. Hence all water that passes through the Spud must be delivered through the funnel into the pipe 19 well below the joints.

The siphon structure illustrated includes an inner tube 21 of any suitable construction or length, the lower end of which is slotted at 22 leaving three hangers 23 each of which has an outwardly proj ectno' footor seg- Y mental flange 24 forming abbase for a coil spring 25 surrounding the tube. The upper f end of the spring bears against the inwardly7 Y' fore at theV lower end of the tube.

Y arranged at an angle to each other corre# The, valve comprises 4a seat 26 which may Y be made of any suitableinaterial either metal or otherwise,'the same being provided with a Acircumferential slot 27 whereby it may be secured as'by screw threads upon the rim 14. This seat may be described as of a wedge shape having inner and outer surfaces at 28 Aand'f29 respectively formed at an angle to each other. The upper edge portion of the seat where thecontact surfaces meet 'may be obtuse, rounded, or any other suitable shape flatter than a sharp angle so as to Vinsure the best operation of the valve. I provide also as indicated'at 30 an outer downwardly projecting flange adapted to bear agrinst the upper surface of-the washer 16 w ereby water is prevented from passing between the valve seat and the washer. The other member of the valve is indicated at 31 andV will be referred to hereinafter as the valve as distinguished from the valve seat. This'member 31 is secured in any suitable manner as by screw threads to the tube 21 whereby it is fixed to and movable therewith into and out of contact with the valve seat. The valve is provided with inner and outer contact surfaces 32 and 33 respectively sponding to the angle between the surfaces 28 and 29 of the valve seat with which they engage respectively simultaneously. The two surfaces 32Y and V33 Vare so formed in the lower portion of thevalve as toform a more acute angle than the meeting line or surface .by observing a space 34 between the two Y valve members when the valve is seated and Vproviding 'for a considerable amount of Wearing between Athe valve members before the third seat of the valve becomes effective at the apex.

In Fig. 3 the general construction is the same as that in Fig. 1, but different, however, in that the Spud 11a is made integral with the funnel structure 17 and the flange 12 is omitted, the spring 25 bearing at its upper end directly against the valve seat 26 which is indicated as of the same structure as in Fig. 1, the lock nut 15 actingfor the same purpose as above indicated to lock the spud with its flange 13 against the gasket 16, but this lock nut is independent of the funnel. The valve 31 is shown as having the same characteristics as set forth above in connection with Fig. 1.

Fig. 4 covers a structure in which the spud is made in two parts, the upper part 11b being integral with the valve seat 26b while the other part thereof with which the lock nut 15b coperates is integral with the funnel 171. In this form the valve seat 26 takes the place of the flange 13 as well as the flange 12 of Fig. 1, but possesses the same features with respect to the wedge shaped or angularly disposed contact surfaces 28 and 29. Fig. 5 shows a still further variation embodying certain features of Fig. 1 and others of Fig. 1. The spud 11c is made integral with the valve set 26c which bears against the washer and the spring as in Fig. Il, while the lock nut operates the same as in Fig. 1 and has combined with it the funnel 17.

In the operation of my improvement the siphon is lifted by any suitable actuating Y means, not shown, but connected to the hook 35 connected to the top of the dome 36 and by means of a hanger 37 Vto the upper end of the tube 21 constituting the down leg of the Siphon whereby the valve 3l is unseated allowing the wat-er in the tank to flow freely inward and downward through the slots 22 in suiiicient volume to initiate the siphonic action when the valve is automatically reseated by the action of the spring 25, or its equivalent. The coperating contact surfaces of the valve members arranged at an angle to each other insure that there must be atrue seating action even though both members may be made of metal, and in the event ofA wear upon the valve` members there will still be insured a water tight joint until the apex of the gro ove between the two surfaces 32 and 33 is reached, when one or the other of the valve members may be required to be renewed.

-The flange 13 of the spud that bears against the outer surface of the washer 16 is provided with circular corrugations or teeth 3, each tooth being provided preferablywith an outer vertical wall and an inner inclined wall. These teeth or corrugations projecting into the compressible washer make the sealv much more effective make it even more diflicult for water to creep through between the washer and the part cooperating therewith. The valve seats shown as parts of the spuds are also prefer* 1 ably provided with siinilarteeth 13V.

. seat, a tubular ineinber to which thevalve isl connected, said tubular ineinber progectingy.

lclaim: Y f y l. In a valve structure 'oi' the class set forth, the coinbination of a valve seathaving two conical contactsurfaces diverging from each other at equal angles fromvv the vertical, the meeting edge thereof being obtuse, imeans to hold the seatin position, a

valve having a groove bounded by two contact surfaces similarly inclined to the respective Contact surfaces of the seat with which they coperate sin'iultaneously, the valve contact surfaces meeting eachother in an angle aforesaid, and ineans to support and inanip' ulate the valve with respect to the seat.- i`

2. In a valve construction for a flush tank havinga bottoni, the combination of a spud extending through the tank bottom, a washer surrounding the spud, a` valve seat associated with the spud and bearing against the washer, a valve coperating with the valve downward. through the valve seat into the spud and below the tank bottoni, and means acting upon the tubular member to automatically seat the valve, said valve seat and valve having a plurality of cooperating con-v tactv surfaces.

3. In a liush v of a spud, a valve seat carried by theupper end of the spud, a washer sealing the joint between the valve seat and the tank boty toni, said valve seat having al downwardly proj ect-ing flange surrounding the spud and pipe with the spud, a funnel construction associated with the spud and extending tank valve, the combination within theV pipe, a' valve .cooperating with the seat, and ineans to control the action of` i the valve with respectto the seat. Y c, L

4. In a flush tank valve structure, the

rvco'iiibinationof fa spud,y avalve seat carried by the upper end` of the Spud',y a tubular member projecting downward through the valve seaty and spud and having open ended slots at its lower en dand having outwardly project-ing i'feet between the lower ends of the V- slots, acoil spring-surrounding the tubular,r Vineii'iberand bearing at oneiend against sald v feet `anderstthe otherk endragainst the Spud and'valve-seat structure, and a valve carried by the tubular iiieinber and caused by 4theV action of the spring to seat'airtoinatically on the valve seat. f

`The herein described valve construc-` tion comprising a Spud, a valve seat removrelatively sharper than the apeX of the seat ably attached to the upper/end of the Spud. Y

an integral funnel construction extending downwardfroin the spud, a discharge pipe c fitting over the funnel construction, means Vto lock the pipe to the funnel, a valve cofA operating with the valve seat, a tubular meniand against "the bottom of the valve seat y tending to 'hold the valve seated.

v 6. In a .flush tank valve structure, the

c coinbinationof a Spud, a valve seatcarried by the upper end of thespuda tubular meub ber` A proje'ictiiig downward vthrough the valve seatfand i Spud and having vpassagewaysV end with a spring,- base, a coil spring surroundingthe tubular membery and bearing at one'end against said. spring base and atV its 'other endV against tlievalve seat structure, and a valve carried vby the tubular member above said passageways and caused by the act-ion yolf-the spring to seat automatically on lthe valve seat.` l

y FRANCIS J. DOWLIN G.

- therethroughand being provided at its lower i Copies of this patent may be obtained forrive jeentsv each,'by addessing th'e"Gommissioner of Patents, Washington, D. C. J

Les. 

